| 摘要 |
<p>The lightweight board (1), especially for room doors, has two outer layers (2,3) and a center layer (4) bonded together at least in sections by an adhesive as a mounting adhesive (5), of a fusible adhesive or foam, and final bonding adhesive (6) of a fusible or dispersion or polycondensation adhesive or a water glass glue, in different and neighboring sections. The setting time of final adhesive is longer than that of the mounting adhesive.</p> |
